CN102166924A - Methods and systems for determining a tire pressure status - Google Patents
Methods and systems for determining a tire pressure status Download PDFInfo
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- CN102166924A CN102166924A CN201110039418XA CN201110039418A CN102166924A CN 102166924 A CN102166924 A CN 102166924A CN 201110039418X A CN201110039418X A CN 201110039418XA CN 201110039418 A CN201110039418 A CN 201110039418A CN 102166924 A CN102166924 A CN 102166924A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000000712 assembly Effects 0.000 claims description 17
- 238000000429 assembly Methods 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 description 25
- 238000004891 communication Methods 0.000 description 14
- 230000008859 change Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 8
- 238000005070 sampling Methods 0.000 description 8
- 238000013022 venting Methods 0.000 description 7
- 230000008676 import Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
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- 238000010943 off-gassing Methods 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0401—Signalling devices actuated by tyre pressure mounted on the wheel or tyre characterised by the type of alarm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0401—Signalling devices actuated by tyre pressure mounted on the wheel or tyre characterised by the type of alarm
- B60C23/0406—Alarms noticeable from outside the vehicle, e.g. indication in side mirror, front light or audible alarms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0455—Transmission control of wireless signals
- B60C23/0462—Structure of transmission protocol
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0484—Detecting an ongoing tyre inflation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
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- Computer Networks & Wireless Communication (AREA)
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Abstract
Various embodiments may include methods and systems for determining a tire pressure status. The system may include at least one computer. An input defining an inflation status of one or more vehicle tires, as well as tire inflation data of the one or more tires, may be received. A specific value associated with an inflation event of the one or more vehicle tires may be calculated based on the inflation data. Further, one or more messages for outputting the specific value from one or more vehicle components may be generated and transmitted to the one or more vehicle components. The specific value may be output as one or more messages from the vehicle.
Description
Technical field
Each embodiment comprises the system and method that is used for determining the tire pressure state.Additional embodiments comprises and is used to measure the inflation of one or more vehicle tyres or the system and method for outgassing rate.
Background technology
Various examples are present in the field that is used for determining the tire pressure state.For example, people's such as Laitsaari the 6th, 441, No. 732 U.S. Patent Publications a kind of system that is used for the display of tyre characteristic.Be equipped with communication system such as for example station (vehicle depot) of petrol service station, public car station or truck terminal (truck terminal), this communication system receives the data of the performance characteristic of expression vehicle tyre from vehicle.When vehicle enters the default circumference (preset perimeter) of petrol service station or when petrol service station was given set a distance, this information can be automatically sent to the suitable transceiver that is positioned at petrol service station.Therefore, when the driver of vehicle begins to refuel or gives his vehicle tyre input air, he can easily check the performance characteristic or the state of his vehicle tyre on telltale, this telltale is installed in other positions easily of the shell of handle, air feeder of fuel charger (gas pump), fuel filler pipe or petrol service station.In addition, the attendant of petrol service station can check the performance characteristic of the tire of any vehicle that is parked in petrol service station, and therefore, if observe abnormal tyre, then attendant can notify its vehicle tyre of driver of the vehicle of abnormal tyre to have potential problem.The permanent recording of the performance characteristic of the tire of any vehicle can be printed.Telltale also can be incorporated in road sign/advertising panel, thereby the motorist who passes by can easily determine the performance characteristic of its vehicle tyre by telltale.Inform that the simple the alert message whether motorist who is positioned at the station or passes by road sign/billboard display needs to pay close attention to their vehicle tyre can replace actual tire performance characteristic to be revealed.
The 6th, 612, No. 165 U.S. Patent Publications of people such as Juzswik a kind of system for monitoring pressure in tyre, this system has the air pressure that is used to indicate in the tire and when is in pressure gauge operational mode in the predetermined pressure range.A kind of inflation pressure of tire monitoring system and method that is used to monitor the air pressure in the tire is provided.This system comprises the unit based on tire, and this unit is used for the air pressure in the sensing tire and is used to send the interior pressure by air pressure signal of this tire of indication.Described system also comprises the unit based on vehicle, and this unit is used to receive described pressure signal and is used for described pressure signal and predefined range of pressure are compared.Described unit based on vehicle can move under the pattern in following pattern: (i) normal operation mode is in outside the predefined range of pressure in response to the air pressure in the tire and exports alarm signal; (ii) pressure gauge operational mode is in response to the air pressure in the tire and comes (in-range) signal in the output area within the predetermined pressure range.
Summary of the invention
Can comprise a kind of tire pressure state notifying system that is used for vehicle on the one hand.This tire pressure state notifying system can comprise at least one computing machine, the inflation of tire data that described at least one computing machine can be configured to receive the input of the inflated condition that limits one or more vehicle tyres and receive described one or more vehicle tyres.Described at least one computing machine also can be configured to calculate the occurrence relevant with the inflation incident of described one or more vehicle tyres based on described inflation data.
Described occurrence can be to be the digital pressure value of the measured described one or more vehicle tyres of unit with pressure.Described occurrence can also be an inflation rate.
Concrete digital pressure value can be the force value of measured described one or more vehicle tyres of the one or more moment in the inflation event procedure.Additionally or alternatively, digital pressure value can be force value poor of measured described one or more vehicle tyres of label force value (can be imported by the user) and one or more moment in the inflation event procedure of storage.
Concrete inflation rate value can be that unit records with time.
Described at least one computing machine also can be configured to produce and from one or more vehicle assemblies (for example be used for, but be not limited to one or more car lights, horn for vehicle, vehicle audio frequency system or voice-based vehicle computing system) one or more message of output occurrence, and described one or more message are sent to described one or more vehicle assembly.Occurrence can be used as one or more message and exports from vehicle.This message can be heard, and can be included but not limited to one or more buzzings, tone, sound of horn or one or more voice-based message.
Can comprise a kind of tire pressure state notifying system that is used for vehicle on the other hand.This tire pressure state notifying system can comprise: first control unit receives the input of the inflated condition that limits one or more vehicle tyres; Second control unit receives the inflation of tire data of described one or more vehicle tyres; The 3rd control unit calculates the occurrence relevant with the inflation incident of described one or more vehicle tyres based on described inflation data; The 4th control unit produces the one or more message that are used for exporting from one or more vehicle assemblies described occurrence; The 5th control unit sends to described one or more message and is used for described occurrence as the described one or more vehicle assemblies of one or more message from vehicle output.
Can comprise a kind of tire pressure state notice method that is used for vehicle on the other hand.This method can comprise input that receives the inflated condition that limits one or more vehicle tyres and the inflation of tire data that receive described one or more vehicle tyres.Can receive described state input and described inflation data by the one or more data packets that send from one or more tire pressure monitoring sensors.In one embodiment, can receive described state input and described inflation data in response to trigger event (for example, but the air quality that is not limited to one or more tires change).In another embodiment, can be after trigger event periodically (for example, but be not limited to per 15 to 30 seconds) receive described state input and described inflation data.
Described method also can comprise based on described inflation data calculates the occurrence relevant with the inflation incident of described one or more vehicle tyres.Can produce the one or more message that are used for from one or more vehicle assembly output occurrences, and described one or more message are sent to described one or more vehicle assembly.In one embodiment, described one or more vehicle assembly can be selected based on user ' s preference.Occurrence can be used as one or more message and exports from vehicle.
In one embodiment, described method can comprise the force value of described one or more vehicle tyres is periodically sampled.The force value of described sampling can be included in the inflation of tire data.In addition, can sample to described force value according to sampling configuration.
In another embodiment, the inflation of tire data can comprise at least one in the inflation time length of label force value and described one or more vehicle tyres.
Other aspects can comprise a kind of method, and this method comprises input that receives the inflated condition that limits one or more vehicle tyres and the inflation data that receive described vehicle tyre.Described method also can comprise the occurrence that calculates the inflation incident based on described inflation data.Described occurrence can be used as one or more message and is output to one or more vehicle assemblies.
By accompanying drawing and following detailed description of the present invention, these and other aspects of the present invention will be better understood.
Description of drawings
The accompanying drawing that illustrates below is used to illustrate some embodiments of the present invention.Accompanying drawing also is not intended to and becomes the restriction of the present invention described in the claim.With reference to the description of carrying out below in conjunction with accompanying drawing, embodiments of the invention and tissue thereof and operating mode objects and advantages of the present invention in addition can be understood best, in the accompanying drawing:
Fig. 1 shows the system for monitoring pressure in tyre according to an embodiment among each embodiment;
Fig. 2 A shows and is used to send data packet message form from one or more message of one or more system for monitoring pressure in tyre sensors according to an embodiment among each embodiment;
Fig. 2 B shows and is used to send data packet message form from the tire pressure status message of one or more system for monitoring pressure in tyre sensors according to an embodiment among each embodiment;
Fig. 2 C shows the non-limiting example of the function code that sends in the data packet of Fig. 2 B;
Fig. 3 shows the exemplary operation of pressure that is used for measuring one or more tires according to an embodiment among each embodiment;
Fig. 4 shows the exemplary operation of inflation/deflation speed that is used to measure one or more tires according to an embodiment among each embodiment;
Fig. 5 shows the exemplary operation that is used for output wheel tire pressure status message according to the system for monitoring pressure in tyre of an embodiment among each embodiment;
Fig. 6 shows the exemplary operation according to the rapid pressure changing pattern of the system for monitoring pressure in tyre of an embodiment among each embodiment.
The specific embodiment
Specific embodiment of the present invention is disclosed at this.Yet, should be appreciated that disclosed embodiment only is an example of the present invention, the present invention can implement with various and optional forms.Therefore, exact functionality details disclosed herein should not be construed as limiting the invention, and as just the representative benchmark of claim and/or as being used to instruct those skilled in the art to implement the representative benchmark of embodiments of the invention in every way.
Fig. 1 shows the non-restrictive illustrative embodiment of the system for monitoring pressure in tyre (TPMS) of vehicle.One or more tire sensor 104a-104d can be disposed in one or more vehicle tyres.For example, tire sensor 104a can be disposed in the near front wheel, and tire sensor 104b can be disposed in the off front wheel, and tire sensor 104c can be disposed in the off hind wheel, and tire sensor 104d can be disposed in the left rear wheel.
In order to detect the pressure state of one or more vehicle tyres, the part that tire sensor 104a-104d can be used as TPMS is installed on one or more wheels.In addition, tire sensor 104a-104d can periodically monitor tire pressure or tire pressure is sampled, to carry out piezometry.For example, tire sensor 104a-104d can monitor one time tire pressure in per 15 minutes.Sensor 104a-104d can monitor cycle of tire pressure can be according to the preference of vehicle manufacturer and different.
Tire sensor 104a-104d can have the different mode that is used to monitor tire pressure.The non-limiting example of tire sensor pattern comprises that rotary mode (promptly, wheel moves), still-mode (promptly, wheel is static a period of time, for example, greater than 15 minutes), transition mode (promptly, the schedule time between tire pressure incident (including but not limited to wheel movement) and the still-mode (for example, 15 minutes)).The pattern that monitoring periods also can move according to tire sensor 104a-104d and different.For example, under rotary mode, tire sensor 104a-104d can monitor one time tire pressure per 5 seconds.Under still-mode, but tire sensor 104a-104d lower frequency ground monitoring tire pressure (for example, tire pressure of per minute monitoring).Under transition mode, sensor 104a-104d can monitor one time tire pressure per 2 seconds.The pattern that tire is moving can be based on the signal of the state of kinematic motion of the indication tire that sends from the motion sensor that communicates with tire pressure sensor 104a-104d.In addition, one or more time meters can be installed among the sensor 104a-104d, are used to measure the time length (span) of transient period.
In tire pressure incident (that is, influence the incident of tire pressure, include but not limited to inflation incident or venting incident) process, tire sensor 104a-104d can enter rapid pressure and change (RPC) pattern.Under the RPC pattern, sensor 104a-104d can send from the tire pressure data of the monitoring of one or more tires acquisitions.Transmission rate can be according to the preference of vehicle manufacturer and is different.In a non-limiting example, can in per 15 to 30 seconds scope, send one time tire pressure data.
Tire pressure data can be sent to TPMS receptor 108, thereby is sent to Body control module (BCM) 102.TPMS receptor 108 can be mounted in the radio frequency receiver module in the vehicle.Therefore, in a non-limiting example, can be used as radiofrequency signal 110 from the tire pressure data of sensor 104a-104d and be sent to TPMS receptor 108.
Body control module (BCM) 102 can be disposed in the vehicle, and can receive the inflation of tire status data from tire pressure sensor 104a-104d.BCM 102 can comprise the programmable instructions (or algorithm) 106 that is used for determining inflation of tire/deflated state.For example, as being described below, TPMS algorithm 106 can determine that with ft lbf/sq in (psi), kPa (kPa), crust or other pressure units be the measured tire pressure level of unit.As another non-limiting example, it can be the measured inflation/deflation speed of unit with (as the non-limiting example) time (for example, second) that TPMS algorithm 106 can be measured.It should be understood that employed measuring unit is nonrestrictive in these examples, under the situation of the scope that does not break away from each embodiment, can use other unit.
BCM 102 can send to inflation of tire/deflated state one or more assemblies of vehicle, so that status message is sent to the user.User's non-limiting example is to give anyone of inflating tyres of vehicles/venting, for example, and car owner, vehicle user or service technician.Can comprise horn for vehicle 114, car light (outside or inner) 116, vehicle computing system (VCS) 118, vehicle audio frequency system 118, meter panel of motor vehicle 120 or its combination to its non-limiting example that sends the vehicle assembly of one or more inflation/deflation status messages.
In one embodiment, status message can be by being sent out and being presented on user's nomadic device (nomadic device) (not shown) with 118 wireless connections of vehicle computing system.Nomadic device can include but not limited to vehicular telephone, PDA, smart phone or any other wireless device.Wireless connections can be but be not limited to BLUETOOTH (bluetooth), WiFi or WiMax.
Message can be sent to one or more vehicle assemblies by vehicle communication network 122, and vehicle communication network 122 can include but not limited to CAN, J-1850, GMLAN.The layout that it should be understood that Fig. 1 is nonrestrictive, under the situation of the scope that does not break away from each embodiment, can make amendment.As non-limiting example, vehicle can comprise one or more vehicle communication networks, so vehicle communication network 112 can be identical network or different networks with vehicle communication network 122.Vehicle communication network 112 and vehicle communication network 122 (for example and unrestricted also can have identical or different speed, network 112 can be the middling speed network, and network 122 can be an express network, and perhaps network 112 and network 122 boths can be express networks).
Can be sent out as one or more data packets according to one or more messaging protocols from the status message that sensor 104a-104d receives by BCM 102.In one embodiment, can be by at least four data packets (or frame) definition of data.Fig. 2 A and Fig. 2 B show the definition inflation of tire/data packet of deflated state message and the exemplary embodiment of related protocol.
Fig. 2 A shows from the data packet of sensor 104a-104d transmission and the overall structure of messaging protocol.Preamble field (preamble field) 200 can comprise the data bit (for example, 8 bits) that is used for the initialization data transmission.Id field 202 can comprise the identifying information of data packet.Identifying information can comprise destination address and source address.Pressure field 204 can comprise the tire pressure value of renewal.For example, this information can comprise the tire pressure value from nearest inflation incident.In one embodiment, can upgrade this information with predetermined time interval (for example, but be not limited to per 15 to 30 seconds).Temperature field 206 can comprise tire air themperature information.Mode field 208 can comprise the sensor states data, and the sensor states data include but not limited to from one or more function codes of sensor 104a-104d transmission.Checksum field 210 can be the check field of check bit of the data of transmission in data packet (or frame).
Fig. 2 B shows the composition of mode field in further detail.Mode field can be included in 8 bit informations that send in the data packet.In one embodiment, can keep first three bits so that specifying information to be provided.For example and unrestricted, first three bits can comprise battery status 208a, mode state 208b and pressure sensor scope 208c.
But the battery life of battery status 208a indication sensor.In one embodiment, battery status 208a can be low state of charge message.But the pattern (as mentioned above) that mode state 208b indication sensor 104a-104d is moving.Pressure sensor scope 208c comprises that sensor obtains the scope with respect to the pressure information of atmosphere.In one embodiment, range of pressure can be (being that unit records with " ft lbf/sq in (gauge pressure) " for example) digital value.In another embodiment, this scope can be a scope (for example, " low/height " scope) substantially.
Residue five bits of 8 bit status fields can comprise one or more function codes.The non-limiting example of function code is a RPC sending function code.When sensor 104a-104d sends inflation of tire/venting data under the RPC pattern, the mode field of data packet will comprise and be used to discern " RPC transmission " function code that rapid pressure changes.The non-limiting example of RPC function code is provided among Fig. 2 C.
For example, if tire is inflated, then function code will comprise the data of representing inflation of tire.Can change scheduled volume (for example, but be not limited to 2psi) by the pressure data that records and determine inflation of tire.In one embodiment, but sensor 104a-104d gaging pressure changes and change based on this pressure and to send pressure and increase and confirm (PIC) signal.On the contrary, if tire is exitted, then function code can comprise the data that expression bleeds a tire.In one embodiment, but sensor 104a-104d gaging pressure changes and change based on this pressure and to send pressure and reduce to confirm (PDC) signal.
Can provide Useful Information to the user by sending the pressure state information as disclosed TPMS system 100 in each embodiment via one or more vehicle assemblies.Can comprise force value and/or inflation/deflation speed in the inflation/deflation event procedure to the non-limiting example of the information that the user provides.The message that sends from TPMS system 100 can be used as independent status message or is received by the user as message combinations.
Non-limiting example 1: force value
Fig. 3 shows the exemplary operation of measuring and sending the force value that is received by the user in the vehicle.As shown in the piece 300, sensor 104a-104d can based on by motion sensor senses to motion and enter the tire monitoring pattern.The non-limiting example of monitoring pattern has been described above.
As shown in the piece 302, sensor 104a-104d can monitor the air quality state that (or sampling) determines one or more tires to air quality (air mass) by (for example).In one embodiment, can carry out the step of monitoring air quality with predetermined time interval.Therefore, as shown in the piece 304, whether the time that can be identified for measuring air quality is over and done with.For example and unrestricted, under transition mode, can carry out the primary air quality monitoring per 2 seconds.As another non-limiting example, under still-mode, but per minute carries out the primary air quality monitoring.According to the pattern that sensor 104a-104d is moving, do not pass by as yet if be used for the time of air quality monitoring, then sensor 104a-104d can stop the air quality measurement.
If pass through the schedule time, then, can determine further whether the air quality of tire changes as shown in the piece 306.If the air quality of tire does not change as yet, then sensor 104a-104d can turn back to the step with predetermined time interval monitoring air quality state.If the air quality of tire changes, then as shown in the piece 308, sensor 104a-104d can enter the RPC pattern.As mentioned above, the air quality variation can be the binary pair that is used for the RPC pattern.
Sensor 104a-104d can change the inflation incident that is identified as based on the air quality increase and with air quality, and perhaps sensor 104a-104d can change the venting incident that be identified as based on the air quality minimizing and with air quality.In case enter the RPC pattern, as shown in the piece 310, just sensor 104a-104d can send to BCM 102 with pressure reading (for example, PIC or PDC).As mentioned above, PIC can comprise the tire pressure value that increases based on air quality, and PDC can comprise the tire pressure value that reduces based on air quality.Can this information be sent to BCM 102 with predetermined time interval (for example and unrestricted, per 15 to 30 seconds (increasing), perhaps per 2 seconds (reducing)) for air quality for air quality.
As shown in the piece 312, in case receive the inflation of tire status signal, just BCM 102 can determine the force value of gas filed tires based on the algorithm 106 that is programmed into BCM 102 and carries out in BCM 102.In one embodiment, algorithm 106 can comprise the instruction that force value is sent to the user via one or more vehicle assemblies.Therefore, one or more orders can be sent to the described one or more vehicle assemblies that are used for the delivery pressure value.The message output function is represented with nahlock A in Fig. 3 and is continued in (below be described further) Fig. 5.
In one embodiment, the user can receive a plurality of pressure state values.In this embodiment, for example, the user can start the inflation incident and the inflation incident is suspended, to obtain initial pressure state of value message.Therefore, after adding one or more strands of air-flows, the user can stop inflation and wait for the arrival of news from one or more vehicle assembly outputs, to measure the initial pressure value.The user can (the inflation incident suspend or the situation that not have to suspend under) continue the inflation incident, to obtain one or more other force value, up to reaching by the determined desired pressure value of exporting of message.
Alternatively or additionally, the user can continue inflation to one or more tires receiving in one or more force value message of vehicle output.When the determined desired pressure value of message that reaches by output, the user can stop further inflation.
Non-limiting example 2: inflation rate
Fig. 4 shows the non-limiting operation of determining inflation/deflation speed in one or more inflation of tires/venting event procedure.As shown in the piece 400, sensor 104a-104d can enter the tire monitoring pattern.As shown in the piece 402, can be by air quality being monitored or samples to determine the air quality state.
The frequency of air quality sampling can be depending on monitoring pattern.Sensor 104a-104d can determine whether based on the passing of the predetermined time interval relevant with each monitoring pattern the air quality of one or more tires is sampled, as shown in the piece 404.As mentioned above, according to the pattern that sensor 104a-104d is moving, do not pass by as yet if be used for the time of air quality monitoring, then sensor 104a-104d can stop air quality mensuration.
If pass through the schedule time, then, can determine further whether the air quality of tire changes as shown in the piece 406.If the air quality of tire does not change as yet, then sensor 104a-104d can turn back to the step with predetermined time interval monitoring air quality state.If the air quality of tire changes, then as shown in the piece 408, sensor 104a-104d can enter the RPC pattern.As mentioned above, the air quality variation can be the binary pair that is used for the RPC pattern.In case enter the RPC pattern, as shown in the piece 410, just sensor 104a-104d can send to BCM 102 with pressure reading (for example, PIC or PDC).
As shown in the piece 412, also can receive the label pressure (placard pressure) that is stored in the vehicle computing system (not shown) at BCM 102 places.This label pressure normally is used to make the tire pressure level of the recommendation of vehicle operating.Therefore, system 100 can utilize label pressure to notify user's inflation/deflation speed, up to reaching label pressure.
The label pressure OEM that installs that can or can be not do not dispatched from the factory is stored in the vehicle computing system.In one embodiment, user (for example, car owner or vehicle user) can import the label pressure of one or more expectations according to the situation of steering vehicle.As a non-limiting example, label pressure can be based on the speed of a motor vehicle (for example and unrestricted, driver wish at high speed drive) and is changed.As another non-limiting example, label pressure can change based on vehicular load (for example and unrestricted, owing to patronage in the vehicle or weight of equipment).Then, when in the inflation/deflation event procedure, notifying user's tire pressure state, can use the label pressure of renewal.The further details of notification procedure is described below.
As shown in the piece 414, can measure the inflation/deflation time of tire.In the RPC event procedure, one or more timestamps (timestamp) can with sampling (for example and unrestricted, under transition mode, per 2 second once sampling) each variation of pressure be associated.Sensor 104a-104d can calculate inflation/deflation speed based on the variation of the force value between the sampling instant.For example, if sensor 104a-104d is in still-mode (once sample to pressure per 30 seconds) and passed through for 30 seconds after the user begins the inflation incident, then near the tire pressure that can measure 30 seconds or 30 seconds of sensor 104a-104d changes with respect to the force value of label pressure.
In one embodiment, in case (that is, locating) the just exportable result that carried out sampling at 30 seconds.When the user restarts to inflate, can be based on the force value measured pressure value variation once more of nearest inflation incident.It should be understood that time value is exemplary, under the situation of the scope that does not break away from each embodiment, can utilize or can not utilize other values.
In another embodiment, the transmission of inflation/deflation speed can be delayed time.For example, send if a pressure state takes place per 60 seconds (under the RPC pattern), then sensor 104a-104d can collect twice to air quality information, and changes and calculate inflation rate based on occurring in air quality before the described transmission.It should be understood that time value is exemplary, under the situation of the scope that does not break away from each embodiment, can utilize or can not utilize other values.
It should be understood that in the venting event procedure and can carry out identical analysis.In addition, it should be understood that the sustainable generation of inflation/deflation (that is, do not interrupted or suspend), up to the pressure stage that reaches expectation by the user.
As shown in the piece 416, the inflation/deflation data can be received by BCM 102.
The information that receives and be sent to BCM 102 from sensor 104a-104d can be imported into TPMS algorithm 106.As shown in the piece 418, can determine inflation rate.Can measure inflation rate for unit with the time (for example, but be not limited to second).As shown in the piece 420, determine that by inflation rate (for example) is up to the time that reaches label pressure.
In one embodiment, algorithm 106 can comprise the instruction that inflation rate and/or time state is sent to the user via one or more vehicle assemblies.Therefore, one or more orders can be sent to the described one or more vehicle assemblies that are used to export inflation rate.The message output function is represented with nahlock A in Fig. 4 and is continued in (below be described further) Fig. 5.
Fig. 5 shows at state and is determined the operation that (as above about as described in Fig. 3 and Fig. 4) exports to the inflation/deflation status message user afterwards.As shown in the piece 500, can determine in BCM 102 should from which assembly output state message.In one embodiment, BCM 102 can be defaulted as by vehicle computing system (not shown) and/or vehicle audio frequency system and come output state message.The non-limiting example of vehicle computing system is the SYNC system that is made and distributed by FORD MOTOR COMPANY (U.S.'s Ford Motor Company).
Can be from the decision of vehicle computing system or another assembly output state message based on the user ' s preference that is stored in the vehicle computing system.The user can import this preference from the vehicle computing system and/or from the website.If import this preference from the website, then information can be passed through any wireless network (for example, but be not limited to WiFi, WiMax or cellular radio communication system) and is sent to vehicle.The non-limiting example of such website is www.syncmyride.com.
If by vehicle computing system transmit status message, then as shown in the piece 502, BCM 102 can send to command signal vehicle communication network 122, thereby sends to the vehicle computing system.As shown in the piece 504, the vehicle computing system can receive order.Then, as shown in the piece 506, the vehicle computing system can be exported this status message from one or more vehicle speakers.
Status message can be outputted as the message that can hear.The non-limiting example of the message that can hear comprises tone, buzzing, voice or its combination.For example, if tire pressure value is 32psi, the message that then is outputted as tone or buzzing can be heard and be " toot-toot-toot (time-out) toot-toot ".Alternatively or additionally, the vehicle computing system can be with sounding language (spoken language) output " 32 ft lbfs per square inch ".It should be understood that the vehicle computing system can be with any language output state message.
As another non-limiting example, if the inflationtime state was confirmed as for 5 seconds, then an output can be " toot-toot-toot-toot-toot ".Another non-limiting output can be from the vehicle computing system with sounding language output " 5 seconds ".
If status message is not sent out by vehicle computing system and/or audio system, then status message can pass through other vehicle assemblies (for example, but be not limited to horn for vehicle or car light) and is sent out.In this case, as shown in the piece 508, BCM 102 can send to horn for vehicle and/or car light with one or more orders.As shown in the piece 510, can be from horn for vehicle and/or car light output state message.
Example above using illustrates this embodiment, if label pressure is 32psi, and horn for vehicle exportable " toot-toot-toot (time-out) toot-toot " then.If also surplus 5 seconds before reaching label pressure, but then loudspeaker buzzing 5 times.Alternatively or additionally, in order to represent 32psi, inner or outside car light can glisten as follows: glisten 3 times, suspend, flash of light 2 times.Reach also surplus 5 seconds before the label pressure in order to be illustrated in, car light can glisten 5 times.
Fig. 6 further shows above-mentioned RPC pattern.When sensor 104a-104d detects the variation of force value, can trigger the RPC pattern.The variation of force value can be based on label pressure.For example, change the activation that 2psi can trigger the RPC pattern from label pressure.Alternatively or additionally, the variation of force value can be based on (determined by pressure field 204) nearest pressure reading.
As shown in the piece 600, sensor 104a-104d can determine pressure state.As shown in the piece 602, can be based on the inflation/deflation incident beginning to determine the pressure state that uses.
During inflation of tire/venting, if sensor 104a-104d determines for the first time the tire pressure state, then as shown in the piece 604, sensor 104a-104d can use label pressure to determine the force value variation.As shown in the piece 606, can determine whether the user has imported label pressure.
If the user does not import label pressure, then, can use (for example, importing) default value by OEM as shown in the piece 608.If receive label pressure from the user, then as shown in the piece 610, the label pressure that can utilize the user to import.
If not determining for the first time the tire pressure state, then as shown in the piece 612, sensor 104a-104d can use from the force value of nearest pressure reading and determine the force value variation.If force value changes, then as shown in the piece 614, the renewable pressure reading of sensor 104a-104d.
As shown in the piece 616, the pressure reading of renewal or label pressure can be sent to TPMS receptor 108 in pressure field 204 (Fig. 2), thereby are sent to BCM 102.
Although illustrated and described embodiments of the invention, and do not mean that these embodiment illustrate and described all possible forms of the invention.On the contrary, the literal that uses in specification sheets is that descriptive matter in which there but not words of limitation it should be understood that under the situation that does not break away from the spirit and scope of the present invention, can carry out various changes.
Claims (11)
1. tire pressure state notifying system that is used for vehicle comprises:
First control unit receives the input of the inflated condition that limits one or more vehicle tyres;
Second control unit receives the inflation of tire data of described one or more vehicle tyres;
The 3rd control unit calculates the occurrence relevant with the inflation incident of described one or more vehicle tyres based on described inflation data;
The 4th control unit produces the one or more message that are used for exporting from one or more vehicle assemblies described occurrence;
The 5th control unit sends to described one or more message and is used for described occurrence as the described one or more vehicle assemblies of one or more message from vehicle output.
2. tire pressure state notifying system as claimed in claim 1, wherein, described occurrence is to be the digital pressure value of the measured described one or more vehicle tyres of unit with pressure.
3. tire pressure state notifying system as claimed in claim 2, wherein, described digital pressure value is the force value of measured described one or more vehicle tyres of the one or more moment in the inflation event procedure.
4. tire pressure state notifying system as claimed in claim 2, wherein, what described digital pressure value was the label force value of storage with in the force value of measured described one or more vehicle tyres of the one or more moment of inflation in the event procedure is poor.
5. tire pressure state notifying system as claimed in claim 4, wherein, the label force value of described storage is imported by the user.
6. tire pressure state notifying system as claimed in claim 1, wherein, described occurrence is an inflation rate.
7. tire pressure state notifying system as claimed in claim 6, wherein, described inflation rate is that unit records with time.
8. tire pressure state notifying system as claimed in claim 1, wherein, described one or more message can be heard.
9. tire pressure state notifying system as claimed in claim 8, wherein, described one or more message of hearing are one or more buzzings, tone, sound of horn or one or more voice-based message.
10. tire pressure state notifying system as claimed in claim 1, wherein, described one or more vehicle assemblies are one or more car lights, horn for vehicle, vehicle audio frequency system or voice-based vehicle computing system.
11. a tire pressure state notice method that is used for vehicle comprises:
Receive the input of the inflated condition that limits one or more vehicle tyres;
Receive the inflation of tire data of described one or more vehicle tyres;
Calculate the occurrence relevant based on described inflation data with the inflation incident of described one or more vehicle tyres;
Generation is used for exporting from one or more vehicle assemblies one or more message of described occurrence;
Described one or more message are sent to be used for described occurrence as described one or more vehicle assemblies of one or more message from vehicle output.
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| US12/712,669 US8525657B2 (en) | 2010-02-25 | 2010-02-25 | Methods and systems for determining a tire pressure status |
| US12/712,669 | 2010-02-25 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20110205047A1 (en) | 2011-08-25 |
| US9205710B2 (en) | 2015-12-08 |
| US20130311033A1 (en) | 2013-11-21 |
| CN102166924B (en) | 2018-11-30 |
| DE102011004665A1 (en) | 2011-08-25 |
| US8525657B2 (en) | 2013-09-03 |
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